A Membraneless Direct Borohydride Fuel Cell Using LaNiO₃‐Catalysed Cathode

Direct borohydride fuel cell (DBFC) is one of the most exciting energy technologies that solve the hydrogen storage and safety issues by using aqueous solution of KBH 4 or NaBH 4 . Here, we present a membraneless DBFC with perovskite‐type oxide LaNiO 3 /C‐catalysed cathode. A significant finding from the electrochemical experiments is that it obviously shows that the existence of BH₄⁻ ions has almost no negative influence on the discharge performances of the LaNiO 3 ‐catalysed cathode. Therefore, the DBFC is designed without using an ion exchange membrane. The maximal power density of 127 mW cm –2 is obtained at 65 °C under atmospheric pressure. A 500 h life test shows that the DBFC has good stability.